Question: How old is an average rock?

On average, the rocks you will find walking around are probably less than a billion year old. Around 500 million, but higher or lower depending on whether youre hiking at the top of the himalayas (younger) or the bottom of the grand canyon(older) or on the beach (could be either), and what youre picking up.

How old are the rocks on the ground?

4.28 billion years old Scientists have found the oldest known rocks on Earth. They are 4.28 billion years old, making them 250 million years more ancient than any previously discovered rocks. Earth formed about 4.6 billion years ago from a disk of gas and dust circling the sun.

Where would you look in order to find the oldest rocks on Earth?

Thats right, geologists, Canada is home to the worlds oldest discovered rocks! When the Earth was formed about 4.6 billion years ago, the molten rock on the surface hardened to form a solid crust.

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